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oai:riuma.uma.es:10630/164652026-02-03T12:13:17Zcom_10630_2254col_10630_37959

Key aspects in 3D fatigue crack closure numerical modelling Camas-Peña, Daniel González-Herrera, Antonio García-Manrique-Ocaña, José Manuel Método de elementos finitos Ingeniería civil Mecánica de fractura Materiales - Fatiga Since long time, fatigue crack closure has been studied by means of finite element models. Initially by bi-dimensional models and recently, due to the higher computational capabilities, the use of three-dimensional models has been extended, providing a wider comprehension of the problem. Starting with the methodology used for 2D cases, a specific methodology for 3D models has been developed. Key parameters affecting the model have been analyzed and recommendations have been established. The numerical accuracy is evaluated in terms of crack closure and opening values. They main issues studied are the material behaviour, the loading cycles and crack growth scheme, the contact simulation, the meshing and the element size at the crack tip and along the thickness, the plastic wake computed and the opening and closure definition considered. This paper summarises the main learning and recommendations from the latest numerical modelling experience of the authors. 2018-09-14T09:00:46Z 2018-09-14T09:00:46Z 2018-09-14T09:00:46Z 2018-09-14 conference output https://hdl.handle.net/10630/16465 eng 17th International Conference on Fracture and Damage Mechanics Sevilla 4/9/18 http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional